Japan · 1991–2020

Best time to visit
Katsuyama.

May leads for comfortable weather in Katsuyama: typically 23.2°C by day, 12.9°C at night, with 144 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high23.2°C

Typical low12.9°C

Rain in May144 mm

Comfort

May

May · October · June

72climate match

Beach

June

June · August · September

53climate match

Outdoors

April

April · May · October

58climate match

The weakest month is January, scoring 5 against May’s 72 — days reach only 6.8°C, 17° below the 24°C the score treats as ideal, and 321 mm of rain falls.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

56.8° / -0.1°

Feb

57.8° / -0.1°

Mar

512.1° / 1.8°

Apr

4218.1° / 6.9°

May

7223.2° / 12.9°

Jun

6226.4° / 17.9°

Jul

2530.5° / 22.4°

Aug

3132.2° / 23.6°

Sep

4527.7° / 18.7°

Oct

6322.1° / 12.5°

Nov

2316° / 6.9°

Dec

59.8° / 2.1°

Monthly climate evidence for Katsuyama — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 35 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	6.8°C	-0.1°C	321 mm	24.6	13.3°C	9 h 57	5	Good coverage
February	7.8°C	-0.1°C	201 mm	20.6	11.5°C	10 h 49	5	Good coverage
March	12.1°C	1.8°C	190 mm	17.9	11.0°C	11 h 51	5	Good coverage
April	18.1°C	6.9°C	148 mm	12.6	12.7°C	13 h 03	42	Good coverage
May	23.2°C	12.9°C	144 mm	9.8	16.1°C	14 h 03	72	Good coverage
June	26.4°C	17.9°C	162 mm	10.9	20.1°C	14 h 36	62	Good coverage
July	30.5°C	22.4°C	256 mm	13.4	23.9°C	14 h 23	25	Good coverage
August	32.2°C	23.6°C	180 mm	9.4	26.8°C	13 h 31	31	Good coverage
September	27.7°C	18.7°C	237 mm	11.8	25.3°C	12 h 22	45	Good coverage
October	22.1°C	12.5°C	170 mm	10.7	22.0°C	11 h 12	63	Good coverage
November	16°C	6.9°C	205 mm	16.4	19.0°C	10 h 12	23	Good coverage
December	9.8°C	2.1°C	339 mm	24.7	15.9°C	9 h 43	5	Good coverage

What has changed

Katsuyama runs +1.3°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.8

Feb

+1.2

Mar

+2.1

Apr

+0.8

May

+1.5

Jun

+2.0

Jul

+2.0

Aug

+1.4

Sep

+1.6

Oct

+1.4

Nov

—

Dec

-0.2

May daytime highs, 2011–2025. Last recorded: 23.6°C.

Records at FUKUI, 1951–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.2°C25 Jan 1972	-9.5°C19 Jan 1985	79 mm9 Jan 2021	635 mm1963 · driest 0 mm in 2026	73
February	21.8°C27 Feb 1954	-9.1°C3 Feb 1956	97 mm7 Feb 1997	350 mm1968 · driest 64 mm in 2014	73
March	26.2°C30 Mar 1979	-7.0°C6 Mar 1963	61 mm17 Mar 2006	250 mm2014 · driest 56 mm in 2025	74
April	31.1°C22 Apr 2004	-2.2°C3 Apr 1960	69 mm25 Apr 2018	234 mm1974 · driest 0 mm in 2025	74
May	34.5°C27 May 2019	2.9°C1 May 1965	122 mm23 May 1987	368 mm2011 · driest 0 mm in 2025	73
June	36.6°C29 Jun 2022	8.7°C8 Jun 1969	140 mm23 Jun 2024	441 mm1961 · driest 0 mm in 2025	73
July	37.7°C29 Jul 2018	13.7°C5 Jul 1966	193 mm18 Jul 2004	638 mm2006 · driest 0 mm in 2025	74
August	38.3°C1 Aug 2022	13.4°C20 Aug 1956	153 mm4 Aug 2022	392 mm2022 · driest 0 mm in 2025	72
September	37.7°C2 Sep 2020	8.4°C30 Sep 1966	151 mm17 Sep 1965	520 mm1989 · driest 0 mm in 2025	72
October	32.0°C2 Oct 1999	2.1°C31 Oct 1983	137 mm23 Oct 2017	317 mm2017 · driest 0 mm in 2025	73
November	28.0°C3 Nov 2023	-0.8°C29 Nov 1969	86 mm2 Nov 2024	376 mm1985 · driest 0 mm in 2025	73
December	23.3°C4 Dec 2018	-8.5°C31 Dec 1967	92 mm28 Dec 1980	644 mm2014 · driest 0 mm in 2025	73

Typical days per month at FUKUI, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	8	10
February	0	0	10	5
March	0	0	4	6
April	2	<1	<1	5
May	11	1	0	4
June	20	5	0	4
July	27	17	0	5
August	30	23	0	4
September	23	7	0	5
October	6	<1	0	4
November	<1	0	0	7
December	0	0	2	10

How often, not how much — every day in FUKUI’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	0%	77%	39%	96%	4.4–8.3°C
February	<1%	69%	26%	90%	5.0–9.5°C
March	3%	55%	20%	74%	9.8–13.8°C
April	24%	43%	19%	60%	16.6–19.9°C
May	52%	37%	17%	44%	21.7–24.2°C
June	58%	41%	20%	58%	24.4–27.9°C
July	58%	42%	22%	49%	27.7–32.0°C
August	70%	30%	15%	37%	29.9–33.7°C
September	57%	44%	21%	59%	25.6–29.4°C
October	46%	41%	19%	56%	20.3–23.0°C
November	10%	56%	26%	79%	14.4–17.3°C
December	<1%	74%	39%	96%	7.5–11.6°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1951Each stripe is one year’s mean temperature against the 40-year average. Warmest: 2025. Coolest: 1965.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1859765
NOAA station: JA000047616 · FUKUI
Station distance: 25.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 36.06°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 35 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from FUKUI is what differs

Fukui-shi→Sakai→Echizen→Takefu→Sabae→Kaga→

Or put two places side by side: Katsuyama vs Fukui-shi

Best time to visitKatsuyama.

May

June

April

The whole year,without the guesswork.

Katsuyama runs +1.3°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Katsuyama.

The whole year,
without the guesswork.

Katsuyama runs +1.3°C
on the 1961–1990 baseline.

Nearby, measured,
and named.